@REVISIONCONTROL{revision-control,
  author = {Aa-Revision-Control},
  title = {{$Id: ope.bib 58 2007-10-05 21:46:31Z andreb $}}
}


@TECHREPORT{matlab,
  author = {Mathworks?},
  title = {Matlab help documentation about ode45 and lsqnonlin},
  institution = {Mathworks},
  year = {2007},
  timestamp = {2007.03.01}
}
